Although they resemble real signs from afar, passers-by can see that the 3D illusion has been painted on to a flat surface.

The artist said: “I’ve created my signs so that they appear fake upon close inspection; however, once they are photographed, they look three-dimensional and look unquestionably real.

“It’s an illusion, in the same way that much of social media is an illusion.”

The names are printed on to Foamex, a PVC foam, added the anonymous artist.

I've created my signs so that they appear fake upon close inspection; however, once they are photographed, they look three dimensional and look unquestionably real. It's an illusion, in the same way that much of social media is an illusion. #illusion#oxfordstreetsignspic.twitter.com/I0Fyd75DwE